Hi, WDNJSQ.
VCMP is enabled on the S5700. In versions earlier than V200R005C00, the default role of the S5700 is client. The S5700 that role as a client cannot be configured with VLAN tag termination sub-interfaces. You can run the vcmp role {server | silent | transparent} command to change the VCMP role of a switch to a non-client role.